Nanometer polysiloxane nontoxic low-surface-energy ship antifouling coating and preparation method thereof

Abstract

The invention relates to the field ship antifouling coatings, in particular to a nanometer polysiloxane nontoxic low-surface-energy ship antifouling coating for sea ships and a preparation method thereof, which are used for solving the problem of long-term nontoxicity, antifouling and corrosion on the outer bottom surface of a ship. The nanometer polysiloxane nontoxic low-surface-energy ship antifouling coating comprises the following components in parts by weight: 50-55 parts of polysiloxane resin, 1-5 parts of nanometer slurry, 5-8 parts of dimethylbenzene, 6-10 parts of butyl ester; 2.0-3.0 parts of ethylene glycol diethyl ether acetic ester, 0.3-0.5 part of a dispersing agent, 0.3-0.5 part of an antifoaming agent, 0.1-0.3 part of a flatting agent, 0.5-0.8 part of an anti-settling agent, 0.4-0.7 part of gas phase white carbon black, 15-22 parts of a pigment and 3-6 parts of a filler. The preparation method comprises the following steps of: proportionally preparing, dispersing, and grinding till the fineness is below 30 micros to obtain a component A; and mixing the component A and the component B for curing to obtain the nontoxic long-term ship sea antifouling coating. The nanometer polysiloxane nontoxic low-surface-energy ship antifouling coating is a surface protection material with extreme low surface energy, and plays roles in preventing fouling and scaling, and marine organisms are prevented from being adhered to the antifouling coating easily.

Description

technical field [0001] The invention relates to the field of antifouling coatings for ships, in particular to a nano-modified polysiloxane non-toxic low surface energy antifouling coating for marine ships and a preparation method thereof. Background technique [0002] Traditional toxic antifouling coatings generally only have an inhibitory effect on some marine organisms, and with the continuous release of toxic substances, their antifouling effect gradually declines. Low surface energy antifouling coatings can prevent the adhesion of various marine organisms. More importantly, low surface energy antifouling coatings are based on the low surface energy physical effects of the coating surface, which can play a long-term antifouling role without toxicity The release loss of substances. Low surface energy antifouling coatings are environmentally friendly, safe and non-toxic, and are recognized as the most ideal marine antifouling coatings. [0003] The main problems restricti...

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Problems solved by technology

[0003] The main problems restricting the development of low surface energy marine antifouling coatings: first, it is difficult to obtain surface materials with lower surface energy, so that the contact angle with water is larger, so that marine organisms are less likely to adhere; Reconstruction is easy to occur in the medium, so that the surface energy increases with time, the contact angle with water decreases, and marine organisms are easy to adhere to